320653273 has 2 divisors, whose sum is σ = 320653274. Its totient is φ = 320653272.

The previous prime is 320653247. The next prime is 320653297. The reversal of 320653273 is 372356023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303038464 + 17614809 = 17408^2 + 4197^2 .

It is a cyclic number.

It is not a de Polignac number, because 320653273 - 2²⁵ = 287098841 is a prime.

It is a super-2 number, since 2×320653273² = 205637042971225058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320653573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160326636 + 160326637.

It is an arithmetic number, because the mean of its divisors is an integer number (160326637).

Almost surely, 2^320653273 is an apocalyptic number.

It is an amenable number.

320653273 is a deficient number, since it is larger than the sum of its proper divisors (1).

320653273 is an equidigital number, since it uses as much as digits as its factorization.

320653273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 31.

The square root of 320653273 is about 17906.7940458363. The cubic root of 320653273 is about 684.4555127590.

The spelling of 320653273 in words is "three hundred twenty million, six hundred fifty-three thousand, two hundred seventy-three".